Oct 31 09:53:10 debian ifup[688]: Failed to get interface index: No such device
Oct 31 09:53:10 debian ifup[688]: ifup: failed to bring up eth0
Oct 31 09:53:10 debian systemd[1]: networking.service: Failed with result 'exit-code'.
Oct 31 09:53:10 debian systemd[1]: Failed to start Raise network interfaces.
> ip address
2: enp0s31f6: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
link/ether 54:e1:ad:50:51:51 brd ff:ff:ff:ff:ff:ff